Denshi Jisho — Online Japanese dictionary

幽霊 ゆうれい ghost; specter; spectre; apparition; phantom
Common word, Noun 
幽霊 ゆうれいかぶ watered stock; bogus shares
Noun 
幽霊 ゆうれいせん ghost ship; phantom ship
Noun 
幽霊蜘蛛 ゆうれいぐも 1: (Usually written using kana alone) pholcid spider (any spider of family Pholcidae, esp. species Pholcus crypticolens);
2: (Colloquialism) harvestman; daddy longlegs
Noun 
幽霊文字 ゆうれいもじ ghost character (apocryphal JIS kanji)
Noun 
幽霊 ゆうれいばなし ghost story
Noun 
幽霊部員 ゆうれいぶいん paper members; people theoretically part of a (school) club but who hardly ever turn up
Noun 
幽霊屋敷 ゆうれいやしき haunted house
Noun 
幽霊会社 ゆうれいがいしゃ bogus company; paper company
Noun 
幽霊社員 ゆうれいしゃいん bogus (phantom) employee
Noun 
幽霊人口 ゆうれいじんこう ghost population
Noun 
幽霊の正体見たり枯れ尾花 ゆうれいのしょうたいみたりかれおばな if you look carefully, it's more ordinary than it appears (lit: the ghost, when examined closely, was withered silver grass)
Expression 

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